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Add support for fetching inlining context (stack of source code locations)

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by instruction address from DWARF.

Add --inlining flag to llvm-dwarfdump to demonstrate and test this functionality,
so that "llvm-dwarfdump --inlining --address=0x..." now works much like
"addr2line -i 0x...", provided that the binary has debug info
(Clang's -gline-tables-only *is* enough).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163128 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov
2012-09-04 08:12:33 +00:00
parent 2d5c28da0d
commit 5eae90d727
12 changed files with 359 additions and 88 deletions
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16
lib/DebugInfo/DWARFDebugRangeList.cpp
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@ -37,10 +37,7 @@ bool DWARFDebugRangeList::extract(DataExtractor data, uint32_t *offset_ptr) {
clear();
return false;
}
// The end of any given range list is marked by an end of list entry,
// which consists of a 0 for the beginning address offset
// and a 0 for the ending address offset.
if (entry.StartAddress == 0 && entry.EndAddress == 0)
if (entry.isEndOfListEntry())
break;
Entries.push_back(entry);
}
@ -57,3 +54,14 @@ void DWARFDebugRangeList::dump(raw_ostream &OS) const {
}
OS << format("%08x <End of list>\n", Offset);
}
bool DWARFDebugRangeList::containsAddress(uint64_t BaseAddress,
uint64_t Address) const {
for (int i = 0, n = Entries.size(); i != n; ++i) {
if (Entries[i].isBaseAddressSelectionEntry(AddressSize))
BaseAddress = Entries[i].EndAddress;
else if (Entries[i].containsAddress(BaseAddress, Address))
return true;
}
return false;
}